Guillaume was born about 1160, the son of Guillaume II (I) des Barres and Helissente de Chaumont. The place is not known.
He died in 1234. The place is not known.
His wife was Amicie de Beaumont-le-Roger, who he married in ABT 1175. The place has not been found. Their two known children were Bure (>1175-?) and Guillaume IV (1182-1250).
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Guillaume III des Barres |
Guillaume II (I) des Barres |
Guillaume I des Barres |
Raoul des Barres |
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Helissente de Chaumont |
Galéran de Chaumont |
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Ermesinde de Sens |
Salo de Sens |
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| Event | Date | Details | Source | Multimedia | Notes |
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| Birth | ABT 1160 |
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| Death | 1234 |
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| Attribute | Date | Description | Details | Source | Multimedia | Notes |
|---|---|---|---|---|---|---|
| Nobility Title | seigneur de la Ferté-Alais |